/**
 * ConceptRecall — premium category/topic directory styles.
 * Shared visual language with the flashcard related-concepts cards.
 */

.cr-catview,
.cr-topic {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: clamp(0.25rem, 1vw, 0.75rem) 0 clamp(1.25rem, 2.5vw, 2.5rem);
}

.cr-directory-head,
.cr-catview__head,
.cr-topic__hero {
  max-width: 920px;
  margin: 0 0 clamp(1.25rem, 2.4vw, 2rem);
  padding: 0;
  border: 0;
}

.cr-catview__title,
.cr-topic__title {
  max-width: 13ch;
  margin: 0.35rem 0 0.35rem;
  font-family: var(--cr-font-serif, 'Source Serif 4', Georgia, serif);
  font-size: clamp(2.45rem, 5vw, 4.35rem);
  font-weight: 660;
  line-height: 0.98;
  letter-spacing: -0.055em;
  color: var(--cr-text, #211f1b);
}

.cr-catview__lead,
.cr-topic__desc {
  max-width: 66ch;
  margin: 0.4rem 0 0;
  font-size: clamp(1rem, 1vw, 1.1rem);
  line-height: 1.62;
  color: var(--cr-text-muted, #5d5953);
}

.cr-catview__meta,
.cr-topic__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  margin: 0.85rem 0 0;
  font-family: var(--cr-font-sans, sans-serif);
  font-size: 0.92rem;
  color: var(--cr-text-faint, #908a80);
}

.cr-topic__count {
  font-weight: 750;
  color: var(--cr-text, #211f1b);
}

.cr-stat,
.cr-filter,
.cr-directory-card__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 26px;
  padding: 0.18rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 760;
  line-height: 1;
  border-radius: 999px;
}

.cr-stat--beginner { background: var(--cr-diff-beginner-bg, #e7f1e8); color: var(--cr-diff-beginner, #4f8a5b); }
.cr-stat--intermediate { background: var(--cr-diff-intermediate-bg, #edf5f3); color: var(--cr-warm-hover, #b1542f); }
.cr-stat--advanced { background: var(--cr-diff-advanced-bg, #efe6ee); color: var(--cr-diff-advanced, #8a5a86); }

.cr-directory-linehead {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  margin: 0 0 1rem;
  font-size: 0.96rem;
  color: var(--cr-text-muted, #5d5953);
}

.cr-directory-linehead strong {
  color: var(--cr-text, #211f1b);
}

.cr-directory-linehead span:last-child::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  margin: 0 0.55rem 0 0;
  vertical-align: middle;
  background: var(--cr-accent, #003f34);
  border-radius: 50%;
}

.cr-directory-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.85rem, 1.8vw, 1.25rem);
  width: 100%;
}

.cr-directory-grid--concepts {
  padding-top: 0.25rem;
}

.cr-directory-card {
  position: relative;
  display: flex;
  min-height: 128px;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
  overflow: hidden;
  padding: clamp(1.05rem, 1.65vw, 1.35rem);
  background:
    radial-gradient(circle at 0% 0%, rgba(0, 63, 52, 0.065), transparent 36%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.985), rgba(255, 255, 255, 0.94));
  border: 1px solid color-mix(in srgb, var(--cr-border, #d9e5e2) 88%, var(--cr-accent, #003f34));
  border-left: 5px solid rgba(45, 125, 110, 0.72);
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(24, 21, 18, 0.045), 0 1px 2px rgba(24, 21, 18, 0.04);
  color: var(--cr-text, #211f1b);
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.cr-directory-card:nth-child(4n + 2) {
  background:
    radial-gradient(circle at 0% 0%, rgba(200, 99, 63, 0.08), transparent 36%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.985), rgba(255, 255, 255, 0.94));
  border-left-color: rgba(200, 99, 63, 0.72);
}

.cr-directory-card:nth-child(4n + 3) {
  background:
    radial-gradient(circle at 0% 0%, rgba(184, 137, 59, 0.09), transparent 36%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.985), rgba(255, 255, 255, 0.94));
  border-left-color: rgba(184, 137, 59, 0.78);
}

.cr-directory-card:nth-child(4n + 4) {
  background:
    radial-gradient(circle at 0% 0%, rgba(91, 126, 181, 0.085), transparent 36%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.985), rgba(255, 255, 255, 0.94));
  border-left-color: rgba(91, 126, 181, 0.75);
}

.cr-directory-card:hover,
.cr-directory-card:focus-visible {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--cr-accent, #003f34) 35%, var(--cr-border, #d9e5e2));
  box-shadow: 0 14px 32px rgba(24, 21, 18, 0.075), 0 4px 12px rgba(24, 21, 18, 0.06);
  outline: none;
}

.cr-directory-card__count {
  color: var(--cr-accent, #003f34);
  background: var(--cr-accent-soft, #e4f3f0);
}

.cr-directory-card__title {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  font-family: var(--cr-font-serif, 'Source Serif 4', Georgia, serif);
  font-size: clamp(1.22rem, 1.35vw, 1.5rem);
  font-weight: 660;
  line-height: 1.12;
  letter-spacing: -0.026em;
}

.cr-directory-card__teaser {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  font-size: 0.96rem;
  line-height: 1.48;
  color: var(--cr-text-muted, #5d5953);
}

.cr-directory-card__cue {
  margin-top: 0.25rem;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--cr-accent, #003f34);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.cr-directory-card:hover .cr-directory-card__cue,
.cr-directory-card:focus-visible .cr-directory-card__cue {
  opacity: 1;
  transform: translateY(0);
}

.cr-topic__controls {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.2rem 0 1.15rem;
  border-top: 1px solid var(--cr-border, #d9e5e2);
  margin-top: 1.45rem;
  padding-top: 1rem;
}

.cr-topic__filters,
.cr-topic__sort {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.cr-filter {
  color: var(--cr-text-muted, #5d5953);
  background: var(--cr-bg-card, #fff);
  border: 1px solid var(--cr-border, #d9e5e2);
  text-decoration: none;
}

.cr-filter:hover {
  border-color: var(--cr-accent, #003f34);
  color: var(--cr-accent, #003f34);
}

.cr-filter.is-active {
  color: #fff;
  background: var(--cr-accent, #003f34);
  border-color: var(--cr-accent, #003f34);
}

.cr-pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.75rem 0 0.5rem;
}

.cr-pager__link {
  padding: 0.55rem 1rem;
  font-weight: 760;
  color: var(--cr-accent, #003f34);
  text-decoration: none;
  border: 1px solid var(--cr-accent-soft, #e4f3f0);
  border-radius: 999px;
}

.cr-pager__link:hover {
  background: var(--cr-accent-soft, #e4f3f0);
}

.cr-pager__status {
  font-size: 0.9rem;
  color: var(--cr-text-muted, #5d5953);
}

.cr-lead,
.cr-topic__empty {
  color: var(--cr-text-muted, #5d5953);
}

@media (max-width: 1120px) {
  .cr-directory-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .cr-directory-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .cr-topic__controls {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .cr-catview,
  .cr-topic {
    padding-top: 0.25rem;
  }
  .cr-catview__title,
  .cr-topic__title {
    max-width: 100%;
    font-size: clamp(2.1rem, 10vw, 3.1rem);
  }
  .cr-directory-linehead {
    flex-wrap: wrap;
    gap: 0.35rem 0.5rem;
  }
  .cr-directory-linehead span:last-child {
    flex-basis: 100%;
  }
  .cr-directory-linehead span:last-child::before {
    display: none;
  }
  .cr-directory-grid {
    grid-template-columns: 1fr;
  }
  .cr-directory-card {
    min-height: 128px;
  }
}


/* =====================================================================
   v31 directory spacing + compact premium cards
   ---------------------------------------------------------------------
   Category/topic pages now follow the same compact rhythm as flashcard
   related cards: less blank space, single-line desktop headers, wider use
   of the container, and tighter footer transition.
   ===================================================================== */
.cr-catview,
.cr-topic {
  padding-top: 0;
  padding-bottom: clamp(0.7rem, 1.4vw, 1.25rem);
}

.cr-directory-head,
.cr-catview__head,
.cr-topic__hero {
  width: 100%;
  max-width: 100%;
  margin-bottom: clamp(0.9rem, 1.7vw, 1.35rem);
}

.cr-catview__title,
.cr-topic__title {
  max-width: none;
  margin: 0.22rem 0 0.28rem;
  font-size: clamp(2.2rem, 4.2vw, 3.95rem);
  line-height: 0.98;
  letter-spacing: -0.058em;
}

.cr-catview__lead,
.cr-topic__desc {
  max-width: 78ch;
  margin-top: 0.15rem;
  font-size: clamp(0.98rem, 0.95vw, 1.08rem);
  line-height: 1.48;
}

.cr-catview__meta,
.cr-topic__stats {
  margin-top: 0.55rem;
  gap: 0.42rem;
}

.cr-directory-linehead {
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  margin-bottom: 0.75rem;
  font-size: 0.92rem;
  line-height: 1.2;
  white-space: nowrap;
}

.cr-directory-linehead .cr-eyebrow {
  flex: 0 0 auto;
}

.cr-directory-linehead strong,
.cr-directory-linehead span:last-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cr-directory-grid {
  gap: clamp(0.75rem, 1.35vw, 1rem);
}

.cr-directory-card {
  min-height: 116px;
  padding: clamp(0.95rem, 1.3vw, 1.15rem);
  justify-content: center;
  border-radius: 17px;
}

.cr-directory-card__count {
  min-height: 24px;
  padding: 0.16rem 0.58rem;
  font-size: 0.74rem;
}

.cr-directory-card__title {
  font-size: clamp(1.12rem, 1.18vw, 1.36rem);
  line-height: 1.12;
}

.cr-directory-card__teaser {
  font-size: 0.92rem;
  line-height: 1.42;
  -webkit-line-clamp: 2;
}

.cr-topic__controls {
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.8rem;
}

.cr-topic__filters,
.cr-topic__sort {
  flex-wrap: nowrap;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.cr-topic__filters::-webkit-scrollbar,
.cr-topic__sort::-webkit-scrollbar { display: none; }

.cr-filter {
  flex: 0 0 auto;
  min-height: 30px;
  padding: 0.35rem 0.72rem;
}

.cr-directory-grid--concepts .cr-directory-card {
  min-height: 158px;
  align-items: flex-start;
  justify-content: center;
}

.cr-directory-grid--concepts .cr-directory-card__count {
  margin-bottom: 0.18rem;
}

.cr-directory-grid--categories .cr-directory-card,
.cr-directory-grid--topics .cr-directory-card {
  min-height: 148px;
}

.cr-pager {
  padding-top: 1rem;
}

@media (min-width: 1121px) {
  .cr-directory-grid--concepts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .cr-directory-linehead {
    flex-wrap: wrap;
    white-space: normal;
  }
  .cr-directory-linehead span:last-child {
    flex-basis: 100%;
  }
  .cr-topic__controls {
    flex-direction: column;
    align-items: stretch;
  }
  .cr-topic__filters,
  .cr-topic__sort {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .cr-catview__title,
  .cr-topic__title {
    font-size: clamp(2rem, 11vw, 2.75rem);
  }
  .cr-directory-card {
    min-height: 112px;
  }
  .cr-directory-grid--categories .cr-directory-card,
  .cr-directory-grid--topics .cr-directory-card,
  .cr-directory-grid--concepts .cr-directory-card {
    min-height: 126px;
  }
}


/* =====================================================================
   v32 category page compact rule
   ---------------------------------------------------------------------
   The category detail page no longer needs an extra section heading before
   the topic cards. A quiet divider after the stats creates enough hierarchy
   and saves vertical space.
   ===================================================================== */
.cr-directory-rule {
  width: 100%;
  height: 1px;
  margin: clamp(0.85rem, 1.35vw, 1.15rem) 0 0;
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--cr-border, #d9e5e2) 95%, transparent),
    color-mix(in srgb, var(--cr-border, #d9e5e2) 70%, transparent),
    transparent
  );
}

.cr-catview--category .cr-directory-head {
  margin-bottom: clamp(0.85rem, 1.45vw, 1.15rem);
}

.cr-catview--category .cr-directory-grid--topics {
  margin-top: 0;
}

.cr-catview--category .cr-catview__meta {
  margin-top: 0.5rem;
}

@media (max-width: 560px) {
  .cr-directory-rule {
    margin-top: 0.75rem;
  }
}

/* =====================================================================
   v33 category continuation section
   ---------------------------------------------------------------------
   Category pages now use the previously empty lower space for direct
   concept discovery, while keeping navigation compact and premium.
   ===================================================================== */
.cr-directory-backlink {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 0.35rem;
  margin: 0 0 0.7rem;
  font-size: 0.86rem;
  font-weight: 720;
  color: var(--cr-text-muted, #5d5953);
  text-decoration: none;
  transition: color 160ms ease, transform 160ms ease;
}

.cr-directory-backlink:hover,
.cr-directory-backlink:focus-visible {
  color: var(--cr-accent, #003f34);
  transform: translateX(-2px);
  outline: none;
}

.cr-directory-feature {
  margin-top: clamp(1.55rem, 2.5vw, 2.2rem);
}

.cr-directory-feature__head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  margin-bottom: 0.8rem;
  font-size: 0.92rem;
  line-height: 1.2;
  color: var(--cr-text-muted, #5d5953);
  white-space: nowrap;
}

.cr-directory-feature__head strong {
  min-width: 0;
  overflow: hidden;
  color: var(--cr-text, #211f1b);
  font-weight: 760;
  text-overflow: ellipsis;
}

.cr-directory-feature__head strong::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  margin: 0 0.55rem 0 0;
  vertical-align: middle;
  background: var(--cr-accent, #003f34);
  border-radius: 50%;
}

.cr-directory-grid--category-concepts .cr-directory-card {
  min-height: 132px;
}

.cr-catview--category .cr-directory-grid--topics + .cr-directory-feature {
  padding-top: 0.25rem;
}

@media (max-width: 820px) {
  .cr-directory-feature__head {
    flex-wrap: wrap;
    white-space: normal;
  }

  .cr-directory-feature__head strong {
    flex-basis: 100%;
  }

  .cr-directory-feature__head strong::before {
    display: none;
  }
}

@media (max-width: 560px) {
  .cr-directory-backlink {
    margin-bottom: 0.55rem;
  }

  .cr-directory-feature {
    margin-top: 1.25rem;
  }
}

/* =====================================================================
   v35 category popular concepts fix + professional backlink
   ---------------------------------------------------------------------
   The category title area now keeps the back navigation separate from the
   content label, avoiding the "All categories Category" duplicate look.
   ===================================================================== */
.cr-catview--category .cr-directory-backlink {
  margin-bottom: clamp(0.55rem, 1vw, 0.8rem);
  padding: 0;
  font-size: 0.84rem;
  font-weight: 760;
  letter-spacing: 0.005em;
  color: color-mix(in srgb, var(--cr-text-muted, #5d5953) 92%, var(--cr-text, #211f1b));
}

.cr-catview--category .cr-directory-backlink::after {
  content: '';
  width: 28px;
  height: 1px;
  margin-left: 0.55rem;
  background: color-mix(in srgb, var(--cr-border, #d9e5e2) 90%, transparent);
}

.cr-catview--category .cr-directory-backlink:hover::after,
.cr-catview--category .cr-directory-backlink:focus-visible::after {
  background: var(--cr-accent, #003f34);
}

.cr-catview--category .cr-directory-feature {
  margin-top: clamp(1.2rem, 2vw, 1.65rem);
}

.cr-catview--category .cr-directory-feature__head {
  margin-bottom: 0.72rem;
}

.cr-catview--category .cr-directory-grid--category-concepts {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 1120px) {
  .cr-catview--category .cr-directory-grid--category-concepts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .cr-catview--category .cr-directory-grid--category-concepts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .cr-catview--category .cr-directory-backlink::after {
    display: none;
  }

  .cr-catview--category .cr-directory-grid--category-concepts {
    grid-template-columns: 1fr;
  }
}

/* =====================================================================
   v36 category/topic distinction polish
   ---------------------------------------------------------------------
   Topic cards and concept cards now have different visual languages so
   learners immediately understand: topics are learning paths; concepts are
   individual flashcards to study.
   ===================================================================== */
.cr-directory-card__kind {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-bottom: 0.15rem;
  font-family: var(--cr-font-sans, sans-serif);
  font-size: 0.68rem;
  font-weight: 820;
  line-height: 1;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--cr-warm, #c8633f) 88%, var(--cr-text, #211f1b));
}

.cr-directory-card--topic {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "kind count"
    "title count"
    "teaser cue";
  column-gap: 1rem;
  align-items: center;
  justify-content: stretch;
  min-height: 132px;
  background:
    radial-gradient(circle at 100% 0%, rgba(45, 125, 110, 0.06), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(249, 247, 241, 0.92));
  border-width: 1px;
  border-left-width: 6px;
}

.cr-directory-card--topic .cr-directory-card__kind { grid-area: kind; }
.cr-directory-card--topic .cr-directory-card__title { grid-area: title; }
.cr-directory-card--topic .cr-directory-card__teaser { grid-area: teaser; }
.cr-directory-card--topic .cr-directory-card__cue { grid-area: cue; justify-self: end; }

.cr-directory-card--topic .cr-directory-card__count {
  grid-area: count;
  align-self: center;
  justify-self: end;
  min-width: 42px;
  min-height: 42px;
  padding: 0;
  font-size: 1rem;
  font-weight: 850;
  color: var(--cr-accent, #003f34);
  background: rgba(232, 241, 239, 0.96);
  border: 1px solid color-mix(in srgb, var(--cr-accent, #003f34) 15%, transparent);
}

.cr-directory-card--topic .cr-directory-card__count::after {
  content: 'cards';
  display: block;
  margin-left: 0.25rem;
  font-size: 0.64rem;
  font-weight: 760;
  color: color-mix(in srgb, var(--cr-accent, #003f34) 75%, var(--cr-text-muted, #5d5953));
}

.cr-directory-card--concept {
  min-height: 132px;
  justify-content: center;
  background:
    linear-gradient(90deg, rgba(45, 125, 110, 0.045), transparent 30%),
    linear-gradient(180deg, rgba(255,255,255,0.99), rgba(255,255,255,0.955));
  border-left-width: 5px;
}

.cr-directory-card--concept .cr-directory-card__kind {
  color: color-mix(in srgb, var(--cr-accent, #003f34) 78%, var(--cr-text, #211f1b));
}

.cr-directory-card--concept .cr-directory-card__count {
  margin-bottom: 0.15rem;
  color: var(--cr-accent, #003f34);
  background: var(--cr-accent-soft, #e4f3f0);
}

.cr-directory-card--category .cr-directory-card__kind {
  display: none;
}

.cr-directory-feature {
  padding-top: clamp(0.75rem, 1.5vw, 1.1rem);
  border-top: 1px solid color-mix(in srgb, var(--cr-border, #d9e5e2) 88%, transparent);
}

.cr-directory-feature__head {
  margin-bottom: 0.85rem;
}

.cr-directory-grid--topics {
  margin-bottom: clamp(0.35rem, 0.9vw, 0.7rem);
}

.cr-catview--category .cr-directory-grid--category-concepts .cr-directory-card__title,
.cr-topic .cr-directory-grid--concepts .cr-directory-card__title {
  -webkit-line-clamp: 2;
}

@media (hover: hover) {
  .cr-directory-card--topic:hover .cr-directory-card__count,
  .cr-directory-card--topic:focus-visible .cr-directory-card__count {
    color: #fff;
    background: var(--cr-accent, #003f34);
  }
}

@media (max-width: 820px) {
  .cr-directory-card--topic {
    min-height: 124px;
  }
}

@media (max-width: 560px) {
  .cr-directory-card--topic {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "kind"
      "title"
      "teaser"
      "count"
      "cue";
    align-items: start;
  }
  .cr-directory-card--topic .cr-directory-card__count,
  .cr-directory-card--topic .cr-directory-card__cue {
    justify-self: start;
  }
  .cr-directory-card--topic .cr-directory-card__count {
    min-width: auto;
    min-height: 26px;
    padding: 0.16rem 0.6rem;
    font-size: 0.78rem;
  }
  .cr-directory-card--topic .cr-directory-card__count::after {
    content: 'concept cards';
    margin-left: 0.25rem;
    font-size: 0.68rem;
  }
}

/* =====================================================================
   v37 stronger topic-vs-concept differentiation
   ---------------------------------------------------------------------
   Learning paths now use a compact product-navigation card language
   (sans title, count capsule, visible path CTA). Concept cards keep the
   flashcard/study-card language (serif title, left accent, subtle study CTA).
   ===================================================================== */
.cr-catview--category .cr-directory-grid--topics {
  gap: clamp(0.9rem, 1.45vw, 1.15rem);
  margin-bottom: clamp(1.05rem, 1.8vw, 1.45rem);
}

.cr-directory-card--topic {
  min-height: 112px;
  padding: clamp(1rem, 1.35vw, 1.18rem) clamp(1.05rem, 1.5vw, 1.3rem);
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "kind count"
    "title count"
    "teaser cue";
  row-gap: 0.32rem;
  column-gap: 0.85rem;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(45, 125, 110, 0.105), rgba(45, 125, 110, 0.025) 42%, rgba(255,255,255,0.965));
  border: 1px solid color-mix(in srgb, var(--cr-accent, #003f34) 18%, var(--cr-border, #d9e5e2));
  border-left: 0;
  border-top: 4px solid rgba(45, 125, 110, 0.66);
  border-radius: 20px;
  box-shadow: 0 10px 26px rgba(45, 125, 110, 0.055), 0 1px 1px rgba(24, 21, 18, 0.035);
}

.cr-directory-card--topic:nth-child(4n + 2) {
  background:
    linear-gradient(135deg, rgba(200, 99, 63, 0.105), rgba(200, 99, 63, 0.025) 42%, rgba(255,255,255,0.965));
  border-color: color-mix(in srgb, var(--cr-warm, #c8633f) 18%, var(--cr-border, #d9e5e2));
  border-top-color: rgba(200, 99, 63, 0.66);
}

.cr-directory-card--topic:nth-child(4n + 3) {
  background:
    linear-gradient(135deg, rgba(184, 137, 59, 0.115), rgba(184, 137, 59, 0.028) 42%, rgba(255,255,255,0.965));
  border-color: color-mix(in srgb, #b8893b 18%, var(--cr-border, #d9e5e2));
  border-top-color: rgba(184, 137, 59, 0.72);
}

.cr-directory-card--topic:nth-child(4n + 4) {
  background:
    linear-gradient(135deg, rgba(91, 126, 181, 0.105), rgba(91, 126, 181, 0.025) 42%, rgba(255,255,255,0.965));
  border-color: color-mix(in srgb, #5b7eb5 18%, var(--cr-border, #d9e5e2));
  border-top-color: rgba(91, 126, 181, 0.7);
}

.cr-directory-card--topic .cr-directory-card__kind {
  grid-area: kind;
  margin: 0;
  color: color-mix(in srgb, var(--cr-text-muted, #5d5953) 80%, var(--cr-accent, #003f34));
  font-size: 0.64rem;
  letter-spacing: 0.16em;
}

.cr-directory-card--topic .cr-directory-card__title {
  grid-area: title;
  font-family: var(--cr-font-sans, system-ui, sans-serif);
  font-size: clamp(1.04rem, 1.05vw, 1.16rem);
  font-weight: 850;
  line-height: 1.17;
  letter-spacing: -0.018em;
}

.cr-directory-card--topic .cr-directory-card__teaser {
  grid-area: teaser;
  font-size: 0.89rem;
  line-height: 1.35;
  color: color-mix(in srgb, var(--cr-text-muted, #5d5953) 90%, var(--cr-text, #211f1b));
}

.cr-directory-card--topic .cr-directory-card__count {
  grid-area: count;
  align-self: start;
  justify-self: end;
  min-width: auto;
  min-height: 28px;
  padding: 0.22rem 0.68rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 860;
  white-space: nowrap;
  color: var(--cr-accent, #003f34);
  background: rgba(232, 241, 239, 0.94);
  border: 1px solid color-mix(in srgb, var(--cr-accent, #003f34) 13%, transparent);
}

.cr-directory-card--topic .cr-directory-card__count::after {
  content: ' paths';
  display: none;
}

.cr-directory-card--topic .cr-directory-card__cue {
  grid-area: cue;
  justify-self: end;
  margin: 0;
  opacity: 1;
  transform: none;
  padding: 0.34rem 0.68rem;
  border-radius: 999px;
  font-size: 0.72rem;
  line-height: 1;
  color: var(--cr-accent, #003f34);
  background: rgba(255,255,255,0.62);
  border: 1px solid rgba(45, 125, 110, 0.1);
}

.cr-directory-card--topic:hover,
.cr-directory-card--topic:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(45, 125, 110, 0.085), 0 4px 12px rgba(24, 21, 18, 0.055);
}

.cr-directory-card--topic:hover .cr-directory-card__cue,
.cr-directory-card--topic:focus-visible .cr-directory-card__cue {
  color: #fff;
  background: var(--cr-accent, #003f34);
  border-color: var(--cr-accent, #003f34);
}

/* Concept cards are deliberately more like individual study cards. */
.cr-directory-card--concept {
  min-height: 148px;
  justify-content: center;
  padding: clamp(1.1rem, 1.45vw, 1.32rem);
  background:
    radial-gradient(circle at 100% 0%, rgba(255,255,255,0.98), transparent 34%),
    linear-gradient(180deg, rgba(255,255,255,0.995), rgba(255,255,255,0.955));
  border-left-width: 5px;
  border-top: 1px solid color-mix(in srgb, var(--cr-border, #d9e5e2) 92%, transparent);
  box-shadow: 0 10px 24px rgba(24,21,18,0.05), 0 1px 2px rgba(24,21,18,0.04);
}

.cr-directory-card--concept .cr-directory-card__kind {
  margin-bottom: 0.05rem;
  color: color-mix(in srgb, var(--cr-accent, #003f34) 82%, var(--cr-text, #211f1b));
}

.cr-directory-card--concept .cr-directory-card__title {
  font-family: var(--cr-font-serif, 'Source Serif 4', Georgia, serif);
  font-size: clamp(1.24rem, 1.25vw, 1.44rem);
  line-height: 1.08;
}

.cr-directory-card--concept .cr-directory-card__teaser {
  font-size: 0.95rem;
  line-height: 1.42;
}

.cr-directory-card--concept .cr-directory-card__cue {
  position: absolute;
  right: 1rem;
  bottom: 0.85rem;
  margin: 0;
  opacity: 0;
}

.cr-directory-card--concept:hover .cr-directory-card__cue,
.cr-directory-card--concept:focus-visible .cr-directory-card__cue {
  opacity: 1;
}

.cr-directory-feature {
  margin-top: clamp(1.1rem, 2vw, 1.65rem);
  padding-top: clamp(0.95rem, 1.5vw, 1.2rem);
}

@media (max-width: 900px) {
  .cr-directory-card--topic,
  .cr-directory-card--concept {
    min-height: 128px;
  }
}

@media (max-width: 560px) {
  .cr-directory-card--topic {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "kind"
      "title"
      "teaser"
      "count"
      "cue";
    align-items: start;
  }
  .cr-directory-card--topic .cr-directory-card__count,
  .cr-directory-card--topic .cr-directory-card__cue {
    justify-self: start;
  }
  .cr-directory-card--concept .cr-directory-card__cue {
    position: static;
    opacity: 1;
    margin-top: 0.15rem;
  }
}


/* =====================================================================
   v38 category section title + concept card hierarchy polish
   ---------------------------------------------------------------------
   Avoids the duplicate "Popular / Popular concepts" feel and makes the
   actual concept cards more prominent than learning-path topic cards.
   ===================================================================== */
.cr-catview--category .cr-directory-feature__head {
  display: flex;
  align-items: center;
  margin: 0 0 clamp(0.85rem, 1.35vw, 1.05rem);
  padding: 0;
  white-space: normal;
}

.cr-catview--category .cr-directory-feature__head h2,
.cr-catview--category .cr-directory-feature__title {
  margin: 0;
  font-family: var(--cr-font-serif, 'Source Serif 4', Georgia, serif);
  font-size: clamp(1.45rem, 1.75vw, 2rem);
  font-weight: 660;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--cr-text, #211f1b);
}

.cr-catview--category .cr-directory-feature__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.28rem 0.5rem;
}

.cr-catview--category .cr-directory-feature__title-accent {
  display: inline-block;
  background: linear-gradient(135deg, #d56f49 0%, #bc7c42 26%, #003f34 62%, #5b7eb5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cr-catview--category .cr-directory-feature__title-base {
  display: inline-block;
  color: color-mix(in srgb, var(--cr-text, #211f1b) 95%, #5d5953);
}

.cr-catview--category .cr-directory-feature__title-base::before {
  content: '•';
  display: inline-block;
  margin-right: 0.45rem;
  color: color-mix(in srgb, var(--cr-accent, #003f34) 82%, white);
}

.cr-catview--category .cr-directory-grid--category-concepts {
  gap: clamp(0.95rem, 1.7vw, 1.28rem);
}

.cr-catview--category .cr-directory-grid--category-concepts .cr-directory-card--concept,
.cr-topic .cr-directory-grid--concepts .cr-directory-card--concept,
.cr-topic .cr-directory-grid--concepts .cr-directory-card {
  min-height: clamp(160px, 10.5vw, 188px);
  padding: clamp(1.25rem, 1.75vw, 1.55rem);
  border-left-width: 3px;
  border-radius: 19px;
}

.cr-catview--category .cr-directory-grid--category-concepts .cr-directory-card--concept .cr-directory-card__title,
.cr-topic .cr-directory-grid--concepts .cr-directory-card__title {
  font-size: clamp(1.36rem, 1.42vw, 1.68rem);
  line-height: 1.08;
}

.cr-catview--category .cr-directory-grid--category-concepts .cr-directory-card--concept .cr-directory-card__teaser,
.cr-topic .cr-directory-grid--concepts .cr-directory-card__teaser {
  margin-top: 0.1rem;
  font-size: clamp(0.98rem, 1vw, 1.08rem);
  line-height: 1.48;
}

.cr-directory-card--concept .cr-directory-card__kind {
  font-size: 0.64rem;
  letter-spacing: 0.16em;
}

.cr-directory-card--concept:hover,
.cr-directory-card--concept:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(24, 21, 18, 0.08), 0 5px 14px rgba(24, 21, 18, 0.06);
}

.cr-directory-card--topic {
  min-height: 112px;
  box-shadow: 0 8px 20px rgba(24, 21, 18, 0.04), 0 1px 1px rgba(24, 21, 18, 0.03);
}

@media (max-width: 820px) {
  .cr-catview--category .cr-directory-feature__head h2,
  .cr-catview--category .cr-directory-feature__title {
    font-size: clamp(1.35rem, 4vw, 1.7rem);
  }
}

@media (max-width: 560px) {
  .cr-catview--category .cr-directory-feature__title {
    display: block;
  }
  .cr-catview--category .cr-directory-feature__title-base::before {
    margin-left: 0.1rem;
  }
  .cr-catview--category .cr-directory-grid--category-concepts .cr-directory-card--concept,
  .cr-topic .cr-directory-grid--concepts .cr-directory-card--concept,
  .cr-topic .cr-directory-grid--concepts .cr-directory-card {
    min-height: 142px;
  }
}


/* v70: /concepts page polish — remove the top Browse eyebrow gap. */
.cr-catview--overview .cr-catview__title {
  margin-top: 0;
}

.cr-catview--overview .cr-directory-head {
  margin-bottom: clamp(1rem, 1.9vw, 1.55rem);
}


/* v71: compact topic hero
   Turns “Topic / title / description / stats” into a tighter title + one-line
   meta summary while preserving the premium editorial style. */
.cr-topic__hero--compact {
  max-width: 100%;
  margin-bottom: clamp(0.75rem, 1.35vw, 1.05rem);
  padding-bottom: clamp(0.72rem, 1.25vw, 0.95rem);
  border-bottom: 1px solid color-mix(in srgb, var(--cr-border, #d9e5e2) 82%, transparent);
}

.cr-topic__hero--compact .cr-topic__title {
  max-width: none;
  margin: 0 0 clamp(0.42rem, 0.8vw, 0.58rem);
  font-size: clamp(2.35rem, 4.2vw, 4.05rem);
  line-height: 0.95;
}

.cr-topic__summaryline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.42rem 0.55rem;
  max-width: 100%;
  color: color-mix(in srgb, var(--cr-text-muted, #5d5953) 90%, black);
  font-size: clamp(0.9rem, 0.98vw, 1rem);
  line-height: 1.25;
}

.cr-topic__label {
  color: var(--cr-warm, #c8633f);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.cr-topic__summary {
  max-width: min(54ch, 100%);
  color: color-mix(in srgb, var(--cr-text-muted, #5d5953) 92%, black);
}

.cr-topic__summary::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  margin: 0 0.45rem 0 0.1rem;
  vertical-align: middle;
  background: var(--cr-accent, #004b3f);
  border-radius: 50%;
}

.cr-topic__summary-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 0.22rem 0.62rem;
  color: var(--cr-accent, #004b3f);
  background: color-mix(in srgb, var(--cr-accent-soft, #e4f3f0) 82%, white);
  border: 1px solid color-mix(in srgb, var(--cr-accent, #004b3f) 9%, transparent);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 820;
  line-height: 1;
}

.cr-topic__summary-pill--beginner {
  color: var(--cr-diff-beginner, #4f8a5b);
  background: var(--cr-diff-beginner-bg, #e7f1e8);
}

.cr-topic__summary-pill--intermediate {
  color: var(--cr-warm-hover, #b1542f);
  background: var(--cr-diff-intermediate-bg, #edf5f3);
}

.cr-topic__summary-pill--advanced {
  color: var(--cr-diff-advanced, #8a5a86);
  background: var(--cr-diff-advanced-bg, #efe6ee);
}

.cr-topic__hero--compact + .cr-topic__controls {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.cr-topic__controls {
  padding-bottom: clamp(0.72rem, 1.25vw, 0.95rem);
}

@media (max-width: 640px) {
  .cr-topic__hero--compact {
    padding-bottom: 0.75rem;
  }

  .cr-topic__hero--compact .cr-topic__title {
    font-size: clamp(2rem, 13vw, 3.1rem);
    margin-bottom: 0.52rem;
  }

  .cr-topic__summaryline {
    gap: 0.36rem 0.42rem;
    font-size: 0.88rem;
  }

  .cr-topic__label {
    width: 100%;
  }

  .cr-topic__summary {
    max-width: 100%;
    flex-basis: 100%;
  }

  .cr-topic__summary::before {
    display: none;
  }

  .cr-topic__summary-pill {
    min-height: 24px;
    padding: 0.18rem 0.54rem;
    font-size: 0.74rem;
  }
}

/* =====================================================================
   v78 nested category support
   ---------------------------------------------------------------------
   Child category cards use the main category card language, but with a
   clearer hub-style hierarchy so learners understand they are entering a
   deeper study area before choosing a topic.
   ===================================================================== */
.cr-directory-grid--child-categories .cr-directory-card--child-category {
  min-height: 148px;
  justify-content: center;
  border-left-width: 5px;
  border-top-width: 1px;
}

.cr-directory-card--child-category .cr-directory-card__kind {
  display: inline-flex;
  margin-bottom: 0.1rem;
  color: color-mix(in srgb, var(--cr-warm, #c8633f) 86%, var(--cr-text, #211f1b));
}

.cr-directory-card--child-category .cr-directory-card__count {
  position: absolute;
  top: 1rem;
  right: 1rem;
}

.cr-directory-card--child-category .cr-directory-card__title {
  padding-right: 4.25rem;
}

.cr-catview--has-children .cr-directory-feature {
  margin-top: clamp(1.2rem, 2vw, 1.75rem);
}

@media (max-width: 560px) {
  .cr-directory-card--child-category .cr-directory-card__count {
    position: static;
    order: -1;
  }

  .cr-directory-card--child-category .cr-directory-card__title {
    padding-right: 0;
  }
}